- Women of childbearing potential who have a positive pregnancy test at enrollment or within 7 days of treatment. In addition, men enrolled on this study should understand the risks to any sexual partner of childbearing potential and should practice an effective method of birth regulation/control. Note: Patients are considered to not be of childbearing potential if they are surgically sterile (they have undergone a hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or they are postmenopausal.